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Questions tagged [dirty-data]

60 questions
42
votes
2 answers

What is meant by the term "dirty object"?

I see the term "dirty" or "dirty objects" a lot in programming. What does this mean?
Shimmy Weitzhandler
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26
votes
4 answers

What does 'dirty-flag' / 'dirty-values' mean?

I see some variables named 'dirty' in some source code at work and some other code. What does it mean? What is a dirty flag?
piotrek
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17
votes
1 answer

Rails save method if no changes

I seem to remember reading somewhere that rails won't commit to the database if no attributes have been changed (presumably as part of active record dirty) is this the case? I can't seem to find it and am none the wiser having had a quick look…
j-dexx
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15
votes
4 answers

ObjectContext.Refresh()?

How to update ALL the dirty entities from the data store, and reset their changed values to the original store value? The method ObjectContext.Refresh requires as a parameter the entities to be refreshed.
Shimmy Weitzhandler
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11
votes
4 answers

Postgresql warning: "could not flush dirty data: Function not implemented"

I'm trying to create a new database on postgres, by running command: CREATE DATABASE dbname; and I face the error: WARNING: could not flush dirty data: Function not implemented many times! and finally I get the message CREATE DATABASE Can…
Someone
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6
votes
1 answer

Prevent input change from causing form to dirty (Angular 5.2)

Is there a simple way to prevent an input control from dirtying its parent form? I could do so by building a custom tag that doesn't have a controlValueAccessor, but I was wondering if there is an easier way. In the middle of one of my forms I have…
Devon Holcombe
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5
votes
1 answer

x86 dirty bit in page table entry

The Intel Architecture manual says when there is first write access against a memory page, the CPU sets the dirty bit of the page table entry. I have questions regarding this issue. 1. The 'dirty bit' in this context is used for guaranteeing the…
daehee
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5
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1 answer

Checking for any dirty Backbone model data within collection

I have a requirement to "nag" a user about unsaved changes when they switch between different Backbone collection models (by clicking on a table row). I've googled for "check backbone model dirty data" (for instance) and not found anything…
Dexygen
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2
votes
1 answer

How to set an ImageDocument to be not dirty in dm-script

How do I set an ImageDocument not to be dirty anymore in python dm-script without saving? I have the python code posted below which can be represented by the following dm-script code. String file_path = GetApplicationDirectory(0,…
miile7
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2
votes
1 answer

Can I avoid using $scope and have user actions set AngularJS dirty bit?

I have a table of settings (e.g., check boxes) on a form and the user has the ability to add and remove table rows. theForm.$dirty gets set if the user changes a setting (e.g., checks or unchecks a check box) but not if a row is added to or removed…
Chris Nelson
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2
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2 answers

Check to see if selection/text was changed in form

I have a form with about 20 controls on it (ComboBox, TextBox, etc) that I have pre-loaded with data. This is being displayed to the user and gives them the capability to change any of the fields. I do not know the best way of recognizing that…
BobSki
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2
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1 answer

Rails is not saving an attribute that is changed

I am appending some text to a notes field on one of my ActiveRecord::Base models but when I save it, it doesn't get updated: valve.notes #=> "Level: Top" valve.notes << "\nDirection: North" valve.notes …
Joshua Pinter
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2
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2 answers

Is there a clean way of cleaning up duplicate entries in MySQL?

In a table, I have three columns - id, name, and count. A good number of name columns are identical (due to the lack of a UNIQUE early on) and I want to fix this. However, the id column is used by other (4 or 5, I think - I would have to check the…
Thomas Owens
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2
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2 answers

NHibernate: How to know if, on Flush() SQL will be sent?

I'm a bit puzzled with the NHibernate's IsDirty() method. Directly after getting a (very large) complex object from my database, NHibernate's ISession.IsDirty() gives 'true'. IFacadeDAL fd = new FacadeDAL(); // Session's not dirty IProject proj =…
Hadzjie
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2
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1 answer

How can I add an "IsDirty" property to a LINQ to SQL entity?

I am binding my entities to an edit form in WPF. Within a DataTemplate, I want to be able to set the background color of the root container within a DataTemplate to show it has been changed and these changes have not yet been submitted to the…
user1228
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